SEA-BUCKTHORN FLY (RHAGOLETIS BATAVA OBSCURIOSA) AND OPTIMIZATION OF PROTECTIVE MEASURES AGAINST PEST IN ALTAI TERRITORY

Abstract

Receiving of high yields of sea-buckthorn in most regions of its cultivation is holding back by the wide distribution and high harmfulness of the sea-buckthorn fly (Rhagoletis batava obscuriosa Kol). The main problem carrying out in protective measures against these vermin consist in the fact, that sea-buckthorn is a medicinal crop and pesticide residues for its fruits are not allowed. The biological method of protection, based on the use of the biogenic preparation Fitoverm (10 g / l), guarantees an environmentally friendly yield, but in the extreme continental climate of the Altai Territory, it does not always provide reliable protection of the crop from the sea buckthorn fly. The wide introduction of the preparation Fitoverm into production is constrained by the high cost of the preparation. In case of force majeure (precipitation before processing, temperature changes, etc.), a low-risk chemical preparation “Fufanon” (570 g/l of malathion) can be used to protect against sea buckthorn flies. The article discusses ways to reduce the consumption rates of the biogenic preparation “Fitoverma” and “Fufanon” in the protection of sea buckthorn from sea buckthorn flies due to their use in combination with a micro supplement and the preparation “Neo”, developed at the Research Institute of Horticulture of Siberia on the basis of natural BAS, as well as a tank mixture of preparations “Fitoverma” and “Fufanon”. The dependence of the efficiency of treatment against sea buckthorn flies on environmental conditions is shown. Fitoverm (10 g / l) at a concentration of 0.3 %, depending on environmental conditions, provided an efficiency of 94.2-99.4 % with reduced consumption rates of the drug due to its combined use with a microadditive and the drug “Neo” 92.5 -100 %, tank mixture “Fitoverma” and “Fufanon” 96.9-100 %. The decrease in residual amounts of malathion by 1.6-2.6 times was ensured by the tank mixture of Fufanon and Fitoverma in half dosages, as well as a half dose of Fufanon in combination with a microadditive.